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Table 4 Comparison of mean cut-scores across methods and sessions

From: Standard setting made easy: validating the Equal Z-score (EZ) method for setting cut-score for clinical examinations

  Mean SD SE 95% CI of the difference t df p-value
Lo Hi
First mock OSCE BRM.Y6.CS - BRM.Y7.CS 0.08 5.30 1.530 −3.28 3.45 0.054 11 0.958
EZ.Day1.CS - EZ.Day2.CS 1.17 4.34 1.254 −1.59 3.93 0.930 11 0.372
EZ.Day1.CS - EZ.Day3.CS − 2.67 3.45 0.995 −4.86 −0.48 −2.680 11 0.021
EZ.Day2.CS - EZ.Day3.CS − 3.83 4.20 1.211 −6.50 −1.17 −3.165 11 0.009
BRM.Y6.CS - EZ.Day1.CS − 7.33 9.91 2.861 − 13.63 −1.04 − 2.563 11 0.026
BRM.Y6.CS - EZ.Day2.CS − 6.17 9.34 2.696 −12.10 − 0.23 −2.287 11 0.043
BRM.Y6.CS - EZ.Day3.CS − 10.00 10.15 2.931 −16.45 − 3.55 −3.412 11 0.006
BRM.Y7.CS - EZ.Day1.CS − 7.42 9.10 2.627 − 13.20 −1.63 − 2.823 11 0.017
BRM.Y7.CS - EZ.Day2.CS − 6.25 9.75 2.815 − 12.45 −0.05 − 2.220 11 0.048
BRM.Y7.CS - EZ.Day3.CS − 10.08 10.57 3.051 −16.80 − 3.37 −3.305 11 0.007
Second mock OSCE BRM.Y6.CS - BRM.Y7.CS 2.17 7.04 2.033 −2.31 6.64 1.066 11 0.309
EZ.Day1.CS - EZ.Day2.CS 1.42 3.34 0.965 −0.71 3.54 1.468 11 0.170
EZ.Day1.CS - EZ.Day3.CS − 2.58 1.62 0.468 −3.61 −1.55 −5.519 11 < 0.0001
EZ.Day2.CS - EZ.Day3.CS − 4.00 3.41 0.985 −6.17 −1.83 −4.062 11 0.002
BRM.Y6.CS - EZ.Day1.CS − 6.42 5.00 1.443 −9.59 − 3.24 −4.446 11 0.001
BRM.Y6.CS - EZ.Day2.CS − 5.00 5.88 1.697 −8.73 − 1.27 −2.947 11 0.013
BRM.Y6.CS - EZ.Day3.CS − 9.00 5.29 1.528 − 12.36 − 5.64 −5.892 11 < 0.0001
BRM.Y7.CS - EZ.Day1.CS − 8.58 6.11 1.764 − 12.47 −4.70 − 4.865 11 < 0.0001
BRM.Y7.CS - EZ.Day2.CS − 7.17 6.34 1.829 − 11.19 − 3.14 −3.918 11 0.002
BRM.Y7.CS - EZ.Day3.CS − 11.17 6.04 1.744 −15.01 −7.33 − 6.401 11 < 0.0001